Resolve "Typo in README.md"

README.md

@@ -182,10 +182,10 @@ Example 1: Docker configuration file inlined in the project repository (`.docker
 {
   "auths": {
     "${docker_snapshot_registry_host}": {
-      "auth": "${docker_release_authent_token}"
+      "auth": "${docker_snapshot_authent_token}"
     },
     "${docker_release_registry_host}": {
-      "auth": "${docker_snapshot_authent_token}"
+      "auth": "${docker_release_authent_token}"
     },
     "my-readonly-repo-to-pull": {
       "auth": "${MY_OWN_REGISTRY_TOKEN}"